Down-hole handle-supported rock drill.



J. G. LEYNER.

' DOWN HOLE HANDLE SUPPORTED ROCK DRILL.

APPLICATION FILED MAR. 10. 19111 1,039,971. Patented 0ct.1,1912.

3 SHEETS-SHEET 1.

J. G. LEYNER. DOWN HOLE HANDLE SUPPORTED ROCK DRILL.

APPLICATION FILED MAR. 10, 1911.

Q Patenteti'Ocfl 1, 1912.

3 SHEETS-8HEET 2.

J. G. LEYNBR. DOWN HOLE HANDLE SUPPORTED ROCK DRILL.

APPLIGATIONIILED M310, 1911. 1 Q39 971 Patented Oct. 1, 1912.

I s SHEETS-43111131 a.

v .mg V v v :I r- I UNlTED STATES PAt-ENT ()FFIC-Iii.

JOHN GEDRGE LEYNER, OF DENVER, COLORADO, Ai-BSIGNOR TOKT'EZE J. GEO. LEYNEE ENGINEERING 'WORKS COMPANY, OF 'LITILETON, CGOZMOI-liADU- A CORPORATION OF corionnno. v v.

'. DOWN-HOLE HANDLE-SUPPORTED BOOK-DEW Specification of Letters Patent.

/ 3 3. 1 l' atentedOctrl,1912.

Application filed Mara 1a, 1911. Serial No. #613,497.

- 1 To{ all inhomit may concern:

rock drilling engines at-p; esent in use.

drillt-he larger size holes to medium. blastattainthese objects by the mechanism illus- 55 Be t known that I, J OHN GEO GE JLlEY' trated .in the accompanying drawings, in NER,a citizen of the United, States of Amerwhich: r

' ,ica', residing inthe city and county of Den- Figure 1 is'a view showing a rock drill in v yer-and State of Colorado, have invented a operation, prm'ided with the improved sup.-

"newwand usetuljDown-Hole Handle Supporting -handles. Fig. 2 is a lon'gitudinal so POrtedRock-Drill, of which'the following is section through a rock drill, showing the aspecitication. improved handles applieduthereto. Fig. 3 My invention relates to a new type of is a plan view of theupper pair of handles,

down hole rock drilling engine, and the vob- "showing the same bolted t0gether, as when jects ofmy invention are, first, to provide a. secured upon a, drill. Fig. is a similar 5 manually operated down hole-rock drilling view of the lower pair of handles. Fig. 5 engine that is capable of drilling .down holesis an end view of one of theupper handles.

1 for blasting purposes, that uses -the same F 6 isa side view of the same; F T is a resiz'ee of drill-bit. steel, and that will drill side view of aportion of one of the lower down holes to the general down hole blast-v handles. Fig. 8 is a plan view of the same 70 e ing depth required in quarries, mine shafts, looking at the under side. Fig. '9 is a plan and'inother rock work, as the largest tunnelview of a portion of a drill cylinder proing and stoping rock drilling engines at vided with the keyways for receiving the present in use; second, to provide a down lower handles. liig. 10 is a vertical, longiholerock drill-ingeng'inein '-which' duplex, tudinal. sectional view through a drill .cyl- 75 rnanuallyooperating, hand grasping mem inder of the kind shown inFigs. 1 and 2. bets are arrangedupon rock drilling engines Fig. ll-is a central, vertical, transverse secin such a relative manner to their length and tion through the same, Fig. 12 is an, end

' 2'5'weight that rock drilling engines weighing view of the rifle bar and ratchet ringused from about seventy-five to one hundred'and in connection with the drill shown in Fig. 80 twenty-five pounds are so, accurately and i; and Fig. 13 is a rear endyiew of the rear sensitively balanced that they can be manu cylinder head. ally handled with quick, alert, and direct Referring to the drawings, 1 have illusn1ovenients and can be steadily held in any trated a down hole rock drilling engine emd'esired position, accurately directed to pre .bodying my inyention. My invention con- '35 determined points and sensitively controlled templates the application of attachable during their operative rock-drilling movemanually grasping handles to rock drilling .lnen'ts, third, toprovide a downv hole engines of. any kind, type, or character at I rock drilling engine, in which asupporting such parts of them as will tend to best shell for attaching drilling engines-to colsteady, guide, direct. and control their move- .90 umns andstoping bars is dispensed with, ments separate from and independently of A iI1 Whi0l1 e fQCl QW Or compressed any feeding .and supporting. members or air operating cylinder now in use for teed- 'inecl'ian'ism they may have, as these unnec- 40 ing drills into rock is also. dispensed with, essaiyteatures can either be secured against and in which theweight of the drilling enmovement to the cylinder portion of the gineis properly directed to effect the down drilling engine or be ac ieved temporarily feed of the drilling engine by means of from them whenever it is desired'to apply manually grasping members so positioned the handle portion of my invention to drill- .45 on the drilling engine in such relative posiing engines already equipped with them, and

i tions to its weight, length, bulk. and center this feature of my invention, together w th of specific gravity that the drilling engines that of a compact, powerful rock drilling of the largest and heaviest sizes in use can mechanism that is free from the commonly be operated by two menwith'ease and pre- "used supporting shell and .teedscrew or 50 cision. and holes in rock of any size up to other form of feeding am aratus and so cothree inches in diameter can be drilledas operativelyconnected to the handle members fast to reasonabledepths as with-mostof at such parts of it to enable it to be easily the column supported and screw or air feed and quickly handled by two men and yet ing depths is best-embodied in. rock drilling i engines of the hammer piston type, and my invention has been especially invented and adapted and is illustrated in rock drilling engine.

.In the present state of the that type of art, single .7 handled, stone dressing, carving, and chip- ,ping air drills capable of drilling small shallow holes are in use, but the handle of these drills is-placed on top ofthe cylinder and is adapted for the use of a single operator for light, shallow depth Work. There is also an air feed drill in'use, on the side of which thbre is a projecting handle portion which is adapted to be grasped by an operator and oscillated in a short arcof a circle to impart a partial vrotary movement to the drill-bit. This drilling engine is, however, suspended between an abutment and the contact of its drill-bit against the rock, the drill being i simply oscillated between these two centers i, so

by the handle portion. My invention diifers radically frointhese handle provided drills, inasmuch as it presents an entirely new type of a rock drilling machine of equal drilling capacity for medium depth of blasting holes with --the largest size tunnel and stoping drilling enginesin use, and in that it is provided with two pair of handles projecting from such different parts ofthe drilling engine antler-ranged to permit two men standingon opposite sides of the drilling engine to grasp it-at its cylinder or. body pdrtion and at its lower and upper end por tions and. in such a manner that the weight and the violent vibratory movement of the cylinder or body of the engine when running is divided between thetwo hands of the operators,fa-nd as the grasp of the hands of the operator is on opposite sides ofthe machine" cooperating opposing pressure guiding movements and directing force is applied to the heavy powerful drilling engine, which enablestwo men to handle and control its movements at much greater speed and precision of movement and to tilt it at pleasure, as the lower holding pressure of their hands acts as. apivoting fulcrum to the moving pressure of their upper hands in tilting or guiding the drill in inclined, down hole drilling work. Thenit possible for one man or even two men to work with a light drill weighing, from ten to seventy-five pounds with a single handle portion at its top. w I in the accompanying drawings I have preferably illustrated my invention embodied in'a compressed air operated and combined intermiugling airand water rock cuttings ejecting rock drilling engine, al-

- though I cointemplate' the embodying of my invention in rock drilling engines that use only air alone and also to those'that use only water alone for ejecting the rock cuttings from the holes while drilling them, and also to rock drilling engines that do not use either air or water for e ect1ng rock cuttings from the holes while drilling them, I having preferably illustrated my invention to the Leyner type of rock drilling engine. as it embodies thehighest elliciency' in rock drill- .ing engines in use, and many of the obnstructive features of the drilling engine illustrated in my present invention are as shown and described in my pending application, Serial Nuniber 570,339, filed July 5, 1910, for in'iprovements in rock drilling engines. Consequently, only such a general description of these old elements as is deemed. necessary to describe an operative rock drilling mechanism is given herein.

To this end, the numeral 2 designates a cylinder whlch 18 provided. with an axial bore 3, in which a hammer piston l is reciprocally' mounted. The cylinder is provided with a front cylinder head portion 5 and with a rear cylinder head portion 6. Each or both of these cylinder heads may be secured to the cylinder inany suitable man ner I preferably, however, secure these cylinder heads to the opposite ends of the cylinder by bolts 7, which I term resilient tension bolts, as they extend through aper-' adapted to strikcagainst the shank end 13 ota rock cutting drill-bit 14, which is 0 )eratively mounted in'the front cylinder head,

in a suitable drill-bit holding chuck. The" chuck I have illustrated comprises a chuck sleeve 15 that fits rovolubly within the front cylinder head. This front cylinder head and 1 the sleeve bear against a ring 16 positioned in the front end portion of the cylinders hammer piston bore to define the limit ot the drillbit striking stroke of the hammer piston. A rifled nut 17 is threaded in the end of the chuck sleeve that lies adjacent to the cylinder ring 16, and bushings 1S and 19 are positioned between the nut and a shoulder 20 formed in the frontend of the sleeve.

A cup 21 is placed over the end of the cylinder and a space is formed in it, in which a key ring 22 is placed, and an axial oblong shaped aperture 23 is formed in the end of the cap, through which the shank end of the .drill and a lug portion 24 that is formed on the drill-bit extends. The lug 2i enters an oblon diainetricnllv nr'rnnonrl nrinr-l-nws 0.;

'bar extends to and through a rear cylinder r1ng28, and its end is-enlarged'into a disk ture in the cap that locksthe drill-bit to the chuckagainst longitudinal displacement."

.The hammer piston is provided wlth 'a hammer 'bar extension, the peripheral sureface of which is provided with a circumferentialtrow of straight rifle flutes, which fit reciprocally within the rifle flutes of the nut in the end of the chuck sleeve. The opposite end of the hammer piston is provided with an axial bore in which a spirally fluted nut 26 is secured and one end of-a spirally fluted rifle bar 27 is-extended reciprocally into the nut; The opposite end of the rifle shaped portion 30, which is provided with a plurality of spring controlled pawls 31. v This disk extends into an axial recessed bore 32 formed in the rear cylinder head and is seated in aratchet ring 32, the interior wall of which isprovided with ratchet'teeth with which thepawls mesh in operative relation.

This ring is seated in the recess 82 of the rear cylinder head.

The hammer piston vided with axial apertures 34 and'Salt, and the rear cylinder head'is provided with an axial aperture'35, in which a water tube'36 is securedby a plug 37 and clamping parts 38 and 39, which are secured in the aperture,

and a waterinlet passageway extends fromits axial aperture to and through a.pro-.-

jecting. hub. portion 40 formed'on the outside of the rear cylinder head, the entrance to which is threaded, and a hose coupling. nipple 41 is threaded to it and a hose 42, a frag v ment of which is shown connected to the outside-end of the nipple; A shut-oil faucet is placed in the hose close enoughto the'cylinder head to be withineasy reach of the opera'toron that side of the' drilling engine. A capfii! is arranged to close the entrances, to the axial aperture 35 in the rear cylinder head. The hose leads to a supply of water under pressure.

The cylinder 'is provided with a valve 'chest43, in which a set of air inlet'and -ex-' .haust ports 44 and 44*? are formed and ar ranged to oper'atively. admit air to the opp'0 site ends of the cylinder. to reciprocate the hammer piston therein; The "valve"'chest is provided with'an an entrance aperture 45. to which an elbow is secured in any suit- 1 able manner to swivel therein, and to the outer end of this elbow one end of a hose 46 is secured, theoppositeend of'wlnch -ex tends to a supply of compressed alra nder suitable pressure to op'eratively reciprocate and rifle bar are pro opposite side of the valve chest fromtheair inlet elbow far enough to receivea handle a8, .which is handy to theoperator working on that side of the drilling engine. The top of the valve chestis-provided. withian exhaust hood portion 49, in which an ex haust-port 50 is formed, from which'the ,air exhausts into the atmosphere.

" In th I shell ofthe under side of the eyl inder'an oil reservoir chamber 51 is formed,

which is cast in the shell of the cylinder. j

An oil entrance is formed into this reservoir cured in the aperture.

The guideways that are'always present on the cylinders of drilling engines'that-irre reciprocated in a supporting shell are dispensed with, and there are no projections below the oil reservoir shell portion-of the cylinder] Consequently the drillingengine is but-a trifle thickerin depth and; also in width than the diameter of its cylinder and presents a compact and closely assembled the hamm er piston in'the cylinder. Avalve- 47 is operatively seated in the air entrance; port. and extends through and beyond the;

- and a plug .52- 1S threaded or otherwise seappearance to the eye, and it is onthis 210- I count muclreas ierxhandled and balanced when grasped at the opposite end portions of the cylinder, and these opposite end 'por-' tions of the oylind'erare provided with hand 3 graspinghandle portions so arranged as'to' enable the operatorl'to grasp the drilling en-- I gine' at t-he point of most forciblevibratory movement, at which points it responds when running to comparatively lightlateral pressures. of the operators, as I haveffoundin practice that the mach-me can bemoved "aboutinuch'easier and with the use-of'inuch 1 05; '11191 -p1ston 1s runn ng than; when 1t 15 not less of the operators strength when the ham-" running the machine when-running being somewhat like a live weight as'-=it bounces into the' air,.a nd when 'n'ot running it like a dead weightand has be draggedalong f or lifted bodily.

The handle portionswhiclrare secured-at the oppositeflend portions of;-thegcyliii'iler-" 'k form; the mostv essential feature 10f my; new

down-hole drilling inachine 5 and, while they may be; secured to anydesired part of-tlhefl drilling'engine and in any. desiredfmanner, such as being 'castor welded or otherw se formed integral with or threadedor clamped or bolted'to th'edrilling engi j. ppefvably removably bolt them tothe oppp itq d n ftions of the cylinder and secure tlrein thereto again'st accide-ntal rocking or rotary.more ment by forming the opposite ndsfof um... cylinderwith a key'way form of re ested; hearing" surface againstiand in which they: "fit; x This feature of my invcntio'ngl"pref .erably carryoutin the following .mai

The laterally pro ecting lug port-ions a t-t c -with' a rapid vertical reciprocal movementv the cylinder. I preferably,

lower end of the opposite ends of the cylinder through which the side bolts that clamp the cylinder heads to the ends of the cylinder are located are the form of triangular shaped recesses, andthey are arranged to die out near the top and bottom portions of'the cylinder, the rece'sses being deepest. at the outer curved end port-ions of-the lugs. These double inclined side recesses form keyway recesses in the lugs,, and' in them the handles are arranged andadapted to fit and are formed to partially embrace the opposite sides of the cylindex and to be clampingly and removably bolted together around the cylinder. These two pairs of handgrasping handles may be ofany desired form or shape, and they may be arranged to partially or wholly surround however, carry out th s featureof my invention in the following manner: The handles 53 for the cylinder comprise preferably tubular pieces of cast steel, although, if desired, they can be formed of any other suitable material and can be made of tubing. The inner ends of the two handles are bifurcated or forked into two-curved yoke shaped portions 54, that are made of a width to fit the width of the tapering recesses of the opposite sides ofth'e lower endiof the cylinder and are curved and otherwise shaped to fit tightly over the curved'ends of the lugs and their opposite sides and to lap up onto the curved top and bottom portions of the cylinder. The inner curved end portion of the yokep'ortion of the lower handles is provided with a projecting bevel sided tapering key portion that vfits into the recessed keyway portion of the cylinder. Each of the ends of the yoke portion of the handles is provided with a projecting lug; 55, through which anaperture is formed and the lugs and apertures of each handle portion are arranged to register opposite each other when in place on the cylinder, and they are .clampingly bolted together rigidly tothe cylinder by bolts 56, which extend through the apertures of the lugs of the opposlte handles, which when tightened clamp the key portion of the yoke end of the handles tightly'into and against the bottoms of the. keyways of the cylinder, as the ends of the yoke "portions of the handles are arranged to a-pproach'c'lose to each other, but are not long enough to bear againsteach other.

The-handles thus project laterallyfrom the opposite sides of the drilling engine oppo-. sitegto each other and in a transverse plane to th c-iongitudinal axis of the cylinder. The Outer ends of these lower handles are pref: erably given a. slightly downward cnrvam order to afford a surer hold for the operators than a straight handle would other. The upper pair of handles 51' are provided with similarly arranged yoke portions 57- and 58 which fit in similar keyway recesses 59 in the upper end of the'drilling cylinder, and they are provided with lugs (30 and with bolts 61, and are clamped to the upper end of the cylinder in the same way as the lower handles. The handle portion of the upper handles, however, is preferably of a different form 'and shape and is preferably curved I outward and upward from their yoke portions, and is divided into two separated side handle portion 63- that extends across the yoke portion between their ends thus forming an upwardly curved crossbar form of handle with a loop aperture bet-ween it and the -.cylinder yoke portion of the handles, and these cross-bar handles extend alongside of the drilling engine and on opposite sides the main partof the adjacent cylinder head of the drilling engine, which arrangement gives inner or cylinder sides. These upper handles are arranged to permit the operators to exert vertical downward pressures and upward lifting pressures, while the lower handles direct and guide the drill-bit when starting holes and drilling them until they are deep enougl The upper handles are also placed to project laterally from the opposite sides ofv the cylinder and in horizontal alineinent to the vertical center of the drilling engine.

The ol'nn'ation of my improved down-hole rock drilling engineis as follows: Two men take the drill and insert a drill of from a foot to two feet in length and place it against the rock at the point where they want to drill a hole.. The drilling engine is thenrighted into a position to drill a vertically straight or an inclined hole, as desired, and theoperators turn on the air and water by moving the air valves handle and the faucet of the water inlet hose to admitthese fluids to the cylinder. I preferably arrange the water faucet on the opposite side of the drilling engine from the air inlet valve, so that one operator can manipulate the air valve and the other operator the water valve, The operators, having turned on the air and water, grasp the lower handles, and as the drill and the drilling engine under the violently rapid reciprocations of the hammer piston have a slight vertical, rapid trembling, and vibratory movement, they exert downward and adjustable lateral'pressures enough on the handles as required and on rect, guide, and hold the rock cutting point of, thoadicill-bit to the point-where they deare provided with similar heyway portions of it, and with these handles slightly above ,t'ree access to these handles on their' are used more particularly to steady and the lower handles especially to steady, di-

yoke portions 62, that terminate in a round sire to drill a hole. and the weight of the drilling engine is sutiicient tobear with a controlling steady pressure on the handles to teed the drilling engine down into the rock.

lVhen a hole has been started and drilled to the length of the first drill, the drilling engine is lifted out of the hole and the drillbit is removed and a longer one is placed in the chuc: and the drilling is resumed and the operation is repeated until the depth of hole required is reached.

.It requires two men to set up the commonly used drilling engine supporting col nmn in a mining tunnel or shaft, or to move and adjust atripod in a quarry and set the large size drilling engines in positibn to drill a hole, and while they are doing this two men can drill one or two or three holes of ordinary blasting depth by hand with one of my improved double handled, clownhole rock drllhng engines, depending 'on the hardness of the rock and the general conditions. -The lower. handles are placed close to the point where the hammer strikes against the drill-bit, and they receive the" greatest vibration and are the most important in steadying and guiding and directing the drill-bit, and these two pairs of handles permit the heaviest and most powerful drilling engines to be accurately directed, steadied, and handled with quick, easy movements without wasting any time or making false indirect movements in the.

drilling of down-holes.

After a hole has been well started and attained a sultlcient depth to enable the drillbit to assist in holding the drilling engine in an operative position by hearing against the-side of the hole being drilled, one of the operators can handle the machine alone and the other can assist in getting two or three other machines started on downholes.

My invention provides a new and valuable time savingrock drilling engine for drilling down holes in quarry work, in sink-' ing mine shafts, and for such other downw-ay recessed ortions at its opposite .end portions. handr grasping handle members arranged to fit against the ends of said cylinder and provided with projecting ke v' portions arranged and adaptedtov '0 Intotrom said cylinder.

the keyway recessed portions, and means for securing-sald handle portions to said cylinder. I 1

2-;- A down-hole drilling machine comprising arock drilling engine having a cylinder provided with curved ended lateral-lug por- Mom at its opposite ends,circumferentially curvedrecess'es in said slugs" arranged to form keyiyay recessed portions, two oppositely arranged hand grasping handle portions provided with keyway'portions- Earrange'd and adapted to fit partially-around the end portions of ,said'cylinder andinto said keyway recesses, and means for removably securing said hand grasping handlesto I said cylinder in said key-ways, said hand grasping members being of any desired shape and arranged at any suitableangle 3, In a down-hole piston rock drilling engine provided with a cylindrical shell portion, with two pairs of hand grasping handles having yoke shaped ends, a key portion on the inner partof each of said yoke ends, said yoke ends'being arranged to fit against and onto said shell, said cylindrical shell '-beingpro- .vided with keyway recesses arranged to-receive the key surfaces of said handles, and

means ctninectedto said handles for securing them to said, cylindrical shell. v

4. A down-hole rock-drillingengine comprising a cylinder, a piston reciprocally mounted in "said cylinder and adapted to strike a drill-shank, a set of independent, oppositely-arranged and upwardly-extending handles removably'd-isposed adjacent the upper end of the engine and providing for effect-mg downward pressuremeans upon the drill and also means for lifting the engine, and .a set of oppositely-arranged handles removably secured to said engine in the region of striking of said piston against said drill-shank'whereby the working end of said engine can be beststeadied and guided. r

5. In a down-hole rock-drilling engine, two pairs of oppositely-disposed handles removably secured. to said engine, the upper of said twopairs curved upwardly and extending far enough above the top end of said drilling engine to form .a clearance space between them nd the adjacent parts of the-drilling engine, and the lower of said two pairs of handles extending approxi-' mately horizontally from and secured to said engine in the regionof-striking of the piston against the drill-shank, whereby the working-end ofsaid'engine can be best steadiedand guided i 6. In a down-hole rock drilling engine,

the combination of the operative rock drilling engine, said drillingengine comprising I a cylinder. provided tapering, rounded,

rock drilling engine, the combination of. an operative hammer projecting lugs at its opposite sides and at its opposite ends said tapering rounded ends being. provided with encircling. concaved grooyes adapted to form keyway recesses with two pairs of manually grasping handles, said handles being arranged to project from opposite sidesof the cylinder and adapted to be grasped by 'CWO operators standing on opposite sides of said cylinder, said two pairs of handles being placed at the upper and lower ends of said cylinder and arrangedwith yoke shaped inner ends arranged to lit over and partially embrace the opposite ends of said cylinder and provided With projecting key portions arranged to extend and fitinto said keyway portions of said cylinder, lugs. on the ends of the yoke portions of said handles, bolt holes through said lugs, said lugs and bolt holes'of each pair of handles being arranged to register opposite each other, end holts extending through the apertures of the lug? of each pair of handles and arranged to clampingly bolt each pair of handles rigidly to said cylinder, said lower handles being arranged to project in a horizontal plane from opposite sides" of said cylinder and having their outer end portions curved rearwardly, and said upper handles being curved upwardly and having their hand grasping portions arranged to stand along the opposite sides of said cylinder and at right angles to the direction of said lower handles.

' In testimony whereof I aflix my signature in presence of two witnesses.

JOHN GEORGE LEYNER.

\Vitnesses ROBERT J. \VALTMAN, Greener. R. Gnievr. 

